InNotesofAutumn,Ellie(Williams)isafun-loving,classicallytrainedpianistlivinginthecitywhogaveuponherpassionlongago.Shenowworksforahotelandalwaysseemstobegettingthingswrongwhenmusicalinspirationstrikes.Herbestfriend,Leo(Macfarlane),livesintherusticoutskirtsofBritishColumbia.He’safamousauthorwithwriter’sblockwhocan’tfinishanotherinstallmentinhishighlypopularbookseries.Theybothneedachangeofsceneryasthechillydaysofautumnsettleinanddecidetoswapplaces,endingupcompletelylostinnewsurroundings.ElliegetstangledupinhelpingLeo’sneighbor,Sam(Rosner),puttogetheramusicalperformanceforalocalfundraiserandcomestotermswithwhyshequitmusicyearsago.Meanwhile,LeostrikesupafriendshipwithEllie’sgoodfriendMatt(Porte)andopenshimselfuptowritingsomethingdifferentthatreallyinspireshim.Theirnewfoundfriendshipsturnintosomethingfarmoremeaningful.AsbothEllieandLeotakepartinthejoysoftheautumnseason,theyalsodiscovertheirheartsbelongsomewhereverydifferentthantheyeverthoughtpossible.